这篇文章主要为大家详细介绍了Android手机联系人带字母索引的快速查找实现方法，感兴趣的小伙伴们可以参考一下
喜欢另辟蹊径的我，在这里废话不多说了，直接上代码和图片了。
效果图如下：
第一步：MainActivity的代码如下：
package net.loonggg.test; import java.util.ArrayList; import java.util.Arrays; import java.util.HashMap; import java.util.List; import java.util.TreeSet; import android.os.Bundle; import android.app.Activity; import android.graphics.Color; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.view.Window; import android.widget.LinearLayout; import android.widget.ListView; import android.widget.TextView; import android.widget.LinearLayout.LayoutParams; public class MainActivity extends Activity { private HashMap selector;// 存放含有索引字母的位置 private LinearLayout layoutIndex; private ListView listView; private TextView tv_show; private ListViewAdapter adapter; private String[] indexStr = { "#", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" }; private List persons = null; private List newPersons = new ArrayList(); private int height;// 字体高度 private boolean flag = false; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // 去标题栏 requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.activity_main); layoutIndex = (LinearLayout) this.findViewById(R.id.layout); layoutIndex.setBackgroundColor(Color.parseColor("#00ffffff")); listView = (ListView) findViewById(R.id.listView); tv_show = (TextView) findViewById(R.id.tv); tv_show.setVisibility(View.GONE); setData(); String[] allNames = sortIndex(persons); sortList(allNames); selector = new HashMap(); for (int j = 0; j persons) { TreeSet set = new TreeSet(); // 获取初始化数据源中的首字母，添加到set中 for (Person person : persons) { set.add(StringHelper.getPinYinHeadChar(person.getName()).substring( 0, 1)); } // 新数组的长度为原数据加上set的大小 String[] names = new String[persons.size() + set.size()]; int i = 0; for (String string : set) { names[i] = string; i++; } String[] pinYinNames = new String[persons.size()]; for (int j = 0; j -1 && index 0) {// 防止ListView有标题栏，本例中没有。 listView.setSelectionFromTop( pos + listView.getHeaderViewsCount(), 0); } else { listView.setSelectionFromTop(pos, 0);// 滑动到第一项 } tv_show.setVisibility(View.VISIBLE); tv_show.setText(indexStr[index]); } } switch (event.getAction()) { case MotionEvent.ACTION_DOWN: layoutIndex.setBackgroundColor(Color .parseColor("#606060")); break; case MotionEvent.ACTION_MOVE: break; case MotionEvent.ACTION_UP: layoutIndex.setBackgroundColor(Color .parseColor("#00ffffff")); tv_show.setVisibility(View.GONE); break; } return true; } }); } } /** * 设置模拟数据 */ private void setData() { persons = new ArrayList(); Person p1 = new Person("耿琦"); persons.add(p1); Person p2 = new Person("王宝强"); persons.add(p2); Person p3 = new Person("柳岩"); persons.add(p3); Person p4 = new Person("文章"); persons.add(p4); Person p5 = new Person("马伊琍"); persons.add(p5); Person p6 = new Person("李晨"); persons.add(p6); Person p7 = new Person("张馨予"); persons.add(p7); Person p8 = new Person("韩红"); persons.add(p8); Person p9 = new Person("韩寒"); persons.add(p9); Person p10 = new Person("丹丹"); persons.add(p10); Person p11 = new Person("丹凤眼"); persons.add(p11); Person p12 = new Person("哈哈"); persons.add(p12); Person p13 = new Person("萌萌"); persons.add(p13); Person p14 = new Person("蒙混"); persons.add(p14); Person p15 = new Person("烟花"); persons.add(p15); Person p16 = new Person("眼黑"); persons.add(p16); Person p17 = new Person("许三多"); persons.add(p17); Person p18 = new Person("程咬金"); persons.add(p18); Person p19 = new Person("程哈哈"); persons.add(p19); Person p20 = new Person("爱死你"); persons.add(p20); Person p21 = new Person("阿莱"); persons.add(p21); } } 此Activity的布局文件如下：
第二步：自定义了一个Adapter，代码如下：
package net.loonggg.test; import java.util.List; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.TextView; public class ListViewAdapter extends BaseAdapter { private Context context; private List list; private ViewHolder viewHolder; public ListViewAdapter(Context context, List list) { this.context = context; this.list = list; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return list.get(position); } @Override public long getItemId(int position) { return position; } @Override public boolean isEnabled(int position) { // TODO Auto-generated method stub if (list.get(position).getName().length() == 1)// 如果是字母索引 return false;// 表示不能点击 return super.isEnabled(position); } @Override public View getView(int position, View convertView, ViewGroup parent) { String item = list.get(position).getName(); viewHolder = new ViewHolder(); if (item.length() == 1) { convertView = LayoutInflater.from(context).inflate(R.layout.index, null); viewHolder.indexTv = (TextView) convertView .findViewById(R.id.indexTv); } else { convertView = LayoutInflater.from(context).inflate(R.layout.item, null); viewHolder.itemTv = (TextView) convertView .findViewById(R.id.itemTv); } if (item.length() == 1) { viewHolder.indexTv.setText(list.get(position).getName()); } else { viewHolder.itemTv.setText(list.get(position).getName()); } return convertView; } private class ViewHolder { private TextView indexTv; private TextView itemTv; } } 第三步：用到的ListView中的子布局文件如下：
1、index.xml布局文件代码如下：
2、item.xml布局文件代码如下：
第四步：用到的实体类及工具类如下：
1、Person.java代码如下：
package net.loonggg.test; public class Person { private String name; private String pinYinName; public Person(String name) { super(); this.name = name; } public Person(String name, String pinYinName) { super(); this.name = name; this.pinYinName = pinYinName; } public String getName() { return name; } public void setName(String name) { this.name = name; } public String getPinYinName() { return pinYinName; } public void setPinYinName(String pinYinName) { this.pinYinName = pinYinName; } } 2、工具类代码如下：
package net.loonggg.test; import net.sourceforge.pinyin4j.PinyinHelper; import net.sourceforge.pinyin4j.format.HanyuPinyinCaseType; import net.sourceforge.pinyin4j.format.HanyuPinyinOutputFormat; import net.sourceforge.pinyin4j.format.HanyuPinyinToneType; import net.sourceforge.pinyin4j.format.HanyuPinyinVCharType; import net.sourceforge.pinyin4j.format.exception.BadHanyuPinyinOutputFormatCombination; public class StringHelper { /** * 得到 全拼 * * @param src * @return */ public static String getPingYin(String src) { char[] t1 = null; t1 = src.toCharArray(); String[] t2 = new String[t1.length]; HanyuPinyinOutputFormat t3 = new HanyuPinyinOutputFormat(); t3.setCaseType(HanyuPinyinCaseType.LOWERCASE); t3.setToneType(HanyuPinyinToneType.WITHOUT_TONE); t3.setVCharType(HanyuPinyinVCharType.WITH_V); String t4 = ""; int t0 = t1.length; try { for (int i = 0; i 到这里就完事，非常简单吧！
以上就是Android手机联系人带字母索引的快速查找的详细内容，更多请关注0133技术站其它相关文章！
